From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean Guyader Subject: Re: [PATCH 1/2] graphics passthrough with VT-d Date: Fri, 28 Aug 2009 09:12:32 +0100 Message-ID: <20090828081232.GA14065@citrix.com> References: <715D42877B251141A38726ABF5CABF2C054B533682@pdsmsx503.ccr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Return-path: Content-Disposition: inline In-Reply-To: <715D42877B251141A38726ABF5CABF2C054B533682@pdsmsx503.ccr.corp.intel.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "Han, Weidong" Cc: "'xen-devel@lists.xensource.com'" , "Lin, Ben Y" , "Kay, Allen M" , Fraser Keir, "'bengheng@eecs.umich.edu'" List-Id: xen-devel@lists.xenproject.org On Fri, Aug 28, 2009 at 03:54:05AM -0400, Han, Weidong wrote: > This patch supports basic gfx passthrough on xen side: > - retrieves VGA bios from host VGA BIOS address (0xC0000), then load it to guest VGA BIOS address (This is the same with XCI). > - Enlarge guest MMIO range to contain gfx card's large memory > - add a config option 'gfx_passthru' for gfx passthrough > > Signed-off-by: Ben Lin > Signed-off-by: Weidong Han Hi, First thanks for taking the time to upstream those patch that will help a lot. I think the patch will be let intrusive if we could do all that bios mapping + copying inside qemu so we don't need to modify the xc_hvm_build function. Qemu starts before the bios so that should be doable. Thanks, Jean